2015 Cadillac Escalade ESV Owner Manual - Page 52

Keys, Doors, and Windows 2-21 Immobilizer See Radio Frequency Statement on page 13-12. The security light in the instrument cluster comes on if there is a problem with arming or disarming the theft-deterrent system. The system has one or more transmitters matched to an immobilizer control unit in the vehicle. Only a correctly matched transmitter will start the vehicle. If the transmitter is ever damaged, you may not be able to start the vehicle. If the engine does not start and the security light stays on, there is a problem with the system. Turn the vehicle off and try again. If the RKE transmitter appears to be undamaged, try another transmitter or place the transmitter in the transmitter pocket/insert next to the center console storage area between the driver and front passenger seats. See "Starting the Vehicle with a Low Transmitter Battery" under Remote Keyless Entry (RKE) System Operation on page 2-2. Immobilizer Operation This vehicle has a passive theft-deterrent system. The system does not have to be manually armed or disarmed. The vehicle is automatically immobilized when the transmitter leaves the vehicle. The immobilization system is disarmed when the ignition button is pressed in and a valid transmitter is found in the vehicle. If the engine does not start with the other transmitter or when the transmitter is in the pocket/insert, the vehicle needs service. See your dealer who can service the theft-deterrent system and have a new transmitter programmed to the vehicle. Do not leave the transmitter or device that disarms or deactivates the theft-deterrent system in the vehicle.